321213142023401 has 4 divisors (see below), whose sum is σ = 321213548445312. Its totient is φ = 321212735601492.

The previous prime is 321213142023391. The next prime is 321213142023497. The reversal of 321213142023401 is 104320241312123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321213142023401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321213142023101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202023125 + ... + 203606898.

It is an arithmetic number, because the mean of its divisors is an integer number (80303387111328).

Almost surely, 2^{321213142023401} is an apocalyptic number.

It is an amenable number.

321213142023401 is a deficient number, since it is larger than the sum of its proper divisors (406421911).

321213142023401 is an equidigital number, since it uses as much as digits as its factorization.

321213142023401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406421910.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 321213142023401 its reverse (104320241312123), we get a palindrome (425533383335524).

The spelling of 321213142023401 in words is "three hundred twenty-one trillion, two hundred thirteen billion, one hundred forty-two million, twenty-three thousand, four hundred one".